Brian

I am having WLAN problems similar to yours in 3.14: freezes, having to 
manually bring up the link, etc.  Wired links work fine.  Did you make any 
progress?  A couple of things I found along the way that might help you or 
others.

- "iwconfig" in 3.14 says my dongle has no wireless extensions.  But "iw" 
works properly.  I believe that iwconfig is being depracated in favor of iw.

- newer kernels are apparently defaulting to inhibiting RF output.  I 
figured this out when I tried to do an "ifconfig wlan0 up" in Jessie and it 
complained it couldn't because of "rfkill".  Doing this in wheezy just 
failed silently... *nice*.  Doing "apt-get install rfkill" followed by 
"rfkill unblock all" got that working.  Next I have to tell systemd to 
remember that across reboots.

I have a TP-Link dongle that causes the kernel to Ooops, and a ZD1211-based 
one that doesn't see the outside world even after it gets an IP address via 
me manually running "dhclient wlan0" on it.  I feel your pain.

On Friday, 26 September 2014 14:44:07 UTC-6, Brian Anderson wrote:
>
>
> I now need to manually enable the link (ifup ra0) to get the interface to 
> come up.  Shouldn't these interfaces come up at boot time due to the "auto" 
> stanza?  They did in 3.8.  Has something changed in 3.14 that prevents the 
> interface from coming up automagically at boot time?  I have the same 
> problem with another USB dongle, I need to manually enable the link (ifup 
> wlan0).
>
> And of course...when I unplugged the 2 dongles (that were both up), 
> everything froze (no panic, no nice blue led's flashing, just the power led 
> on).  I think its the Realtec dongle that was on wlan0.  Rebooted, with 
> just the Realtec dongle, can plug and unplug it with no problems.  But if I 
> enable the link (ifup wlan0), then unplug it, boom.  Doing the same with 
> the UWN-200 RaLink dongle doesn't seem to cause the same crash/hang.
>
> Note that neither the UWN-200 nor the Realtec devices are successfully 
> associating with the AP configured in /etc/network/interfaces.  They 
> associate just fine in 3.8 with the same /etc/network/interfaces.
>

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